Cl2 (g) + Na2SO4 (aq) + 2 FeSO4 (aq) 2 NaCl (aq) + Fe2(SO4)3 (s)

This is an oxidation-reduction (redox) reaction:

2 Cl0 + 2 e- 2 Cl-I (reduction)

2 FeII - 2 e- 2 FeIII (oxidation)

Cl2 is an oxidizing agent, FeSO4 is a reducing agent.

Reactants:

  • Cl2
    • Names: Chlorine source: ICSC, accessed: 2019-09-04source: NIOSH NPG, accessed: 2019-09-02, Molecular chlorine source: NIOSH NPG, accessed: 2019-09-02
    • Appearance: Greenish-yellow compressed liquefied gas with pungent odour source: ICSC, accessed: 2019-09-04; Greenish-yellow gas with a pungent, irritating odor. [Note: Shipped as a liquefied compressed gas.] source: NIOSH NPG, accessed: 2019-09-02
  • Na2SO4
    • Names: Sodium sulfate source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02source: ICSC, accessed: 2019-09-04, Sodium sulphate source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02, Sulfate of sodium source: wikipedia, accessed: 2019-09-27
    • Appearance: White crystalline solid | hygroscopic source: wikipedia, accessed: 2019-09-27; White hygroscopic solid in various forms source: ICSC, accessed: 2019-09-04
  • FeSO4Iron(II) sulphate source: wikipedia, accessed: 2019-09-27
    • Other names: Iron(II) sulfate source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02, Ferrous sulfate source: wikipedia, accessed: 2019-09-27, Green vitriol source: wikipedia, accessed: 2019-09-27
    • Appearance: White crystals (anhydrous) | White-yellow crystals (monohydrate) | Blue-green crystals (heptahydrate) source: wikipedia, accessed: 2019-09-27

Products:

  • NaClSodium chloride source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02
    • Other names: Salt source: wikidata, accessed: 2019-09-02, Table salt source: wikidata, accessed: 2019-09-02, Common salt source: wikidata, accessed: 2019-09-02
    • Appearance: Colorless cubic crystals source: wikipedia, accessed: 2019-09-27
  • Fe2(SO4)3Iron(III) sulfate source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02
    • Other names: Ferric sulfate source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02, Sulfuric acid source: wikipedia, accessed: 2019-09-27, Iron(3+) salt (3:2) source: wikipedia, accessed: 2019-09-27
    • Appearance: Grayish-white crystals source: wikipedia, accessed: 2019-09-27